源代码 ：
点击运行
<!DOCTYPE html> <html> <head> <title>Font Awesome 图标</title> <meta name="viewport" content="width=device-width, initial-scale=1"> <link rel="stylesheet" href="https://cdn.staticfile.org/font-awesome/4.7.0/css/font-awesome.css"> </head> <body> <h1>fa fa-chevron-circle-down</h1> <i class="fa fa-chevron-circle-down"></i> <i class="fa fa-chevron-circle-down" style="font-size:24px"></i> <i class="fa fa-chevron-circle-down" style="font-size:36px"></i> <i class="fa fa-chevron-circle-down" style="font-size:48px;color:red"></i> <br> <p>按钮中使用:</p> <button style="font-size:24px">按钮 <i class="fa fa-chevron-circle-down"></i></button> <p>Unicode:</p> <i style="font-size:24px" class="fa"></i> </body> </html>
运行结果